UNIT 14-NUCLEAR

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Across
  1. 2. the closer the number of protons is to the number of neutrons the more _____ the atom is
  2. 4. has a heavy mass, low on danger, and protection is provided by skin and paper
  3. 8. on an isotope the mass number is located at the _____
  4. 9. potential energy, meaning that mass is a form of energy
  5. 11. are atoms that are missing or have extra electrons
  6. 14. on a periodic table the mass number is located at the ______
  7. 15. fission is the system we use in _______
  8. 17. number of protons and electrons
  9. 18. number of protons plus the number of neutrons
Down
  1. 1. protection can be provided by lead or feet of thick concrete, highly danger, and has no mass
  2. 3. have a different number of neutrons and therefore have a different mass number
  3. 5. the process of causing a larger atom to split into multiple small atoms, releasing energy in the process
  4. 6. the atomic number tells what _____ it is
  5. 7. mass number minus atomic number
  6. 10. isotopes can be written in how. many different ways
  7. 12. the farther away the number of protons is to the number of neutrons the more _____ the atoms
  8. 13. the energy source of the sun and star
  9. 16. slightly dangerous, has a high mass, and protection can be provided by glass and clothing